Screen for nozzles



Patented Feb. 15, 1927.

UNITED STATESr GEORGE E. MARGH, OF MUSKEGON, MICHIGAN.

SCREEN FOR NOZZLES.

Application filed March 30, 19723. Serial No. 628,942.

The present invention relates to screens for nozzles, particularly such.as are employed to vent water from the horizontallydisposed water pipesof an irrigating or sprinkling system; and its object is, generally, toprovide an improved screen for such a nozzle whereby any solid matter insuspension in the water may be prevented from stopping or interferingwith the How of water through the nozzle; and, more partic-ularly, toprovide such a screen formed from a foraminous sheet bent in such manneras to provide a hollow cylindrical screening member having a closed end,and adapted to be holdingly fitted in the nozzle.

rIhis and any other objects hereinafter appearing are attained by, andthe invention finds preferable embodiment in, the structure hereinafterparticularly described in the body of this specification and illustratedby the accompanying drawings, in which z Figure l is a vertical centrallongitudinal sectional view of a portion of an irrigating pipe, havingnozzles to which my improved screens are applied, one of which is shownincentral longitudinal section taken on line 1 1 of Figure 2;

Figure 2 is an -under side fragmentary View of the same, one of thenozzles and its screen being shown in transverse section taken on line2-2 of Figure l;

Figure 3 is a side view (reduced in size) of said pipe illustratingnozzles having my screens applied thereto;

Figure 4 is a transverse sectional view of the pipe taken on line 4 4 ofFigure 3;

Figure 5 is a view of a blank or foraminous sheet from which the screenis formed; and

Figure 6 is a side view of the screen formed by bending said blank orsheet.

In the embodiment of my invention chosen for illustration by thedrawings and for detaileddescription in the body of this specification,a portion of a horizontally disposed pipe 1 through which water forirrigating or sprinkling passes is shown, to which pipe are applied aplurality of nozzles 2, spaced apart at desired intervals. As thusillustrated, these nozzles are threaded into openings through the wallof the pipe. Each nozzle has a passage therethrough, the inner portion 3of which passage is cross-sectionally larger than the vent or outerportion 4 thereof. A screen 5 hollow-cylindrical in form is seated inthe inner portion of said passage through the nozzle and, as shown,extends outwardly beyond the inner end 6 of the nozzle and into theinterior of the pipe l.

These screens are formed from a blank shown in Figure 5, being aforaminous sheet (as of brass or the like) having asubstantially-rectangular body portion 7 and adjacent one end of saidbody portion a plurality of extensions 8 tapering outwardly' towardtheir extremities or points 9; and said blank has preferably also aslightly tapering portion l0 adjacent the blanks opposite end.

This blank is fashioned to form the screen (particularly well shown inFigure 6) by bending into hollow cylindrical form its middle or bodyportion 7 and bending the extensions 8 toward and into contact with eachother to form a hemispherical closed end 11 of the screen; and bybending the slightly tapering portion 10 of the blank into slightlytapering frustro-conical form seen in Figure 6.

The screen thus formed is seated in the enlarged portion 3 of thenozzles passage by thrusting thereinto the frustro-conical portion l0 ofthe screen, and is held in such portion of the passage by the wedgingcontact of the frustro-conical portion of the screen therewith. The end11 and the hollow cylindrical body or middle portion 7 of the screenextend intothe pipe l, so that the water passing through the nozzle mustfirst pass through the foraminous body porby solid matter in suspensionin the water is screened out.

It will be seen that the bent over eXtensions 8 of the screen, extendingas thus bentV transversely to the cross-section of the cylindricalportion of the screen, hold said tion 7 and closed end l1 of the screen,where- Y tion, a. slightly tapering end portion .and a plurality ofoutwardlytapering extensions adjacent its opposite end, the body portionof the sheet being bent into hollow cylindri- 5 cal form the ta erin@end Doi'tion beino' a D l bent into hollow frustro-eonioal forni, undthe extensions belng bent toward and into GEORGE E. MARCH.

